Electrochemical AsH3 Sensor ME3-AsH3

  • Electrochemical-AsH3-Sensor-ME3-AsH3.png


The ME3-AsH3 electrochemical element works according to the principle of electrochemistry, using the electrochemical oxidation process of the gas to be tested on the working electrode in the electrolysis cell, and the working electrode and the reference electrode of the electrolysis cell are kept at an appropriate potential through electronic circuits. , the electrochemical oxidation of the gas to be tested can occur at this potential. Since the Faradaic current generated by the oxidation and reduction reactions of oxygen is very small and can be ignored, the current generated by the electrochemical reaction of the gas to be tested is proportional to its concentration. And follow Faraday's law. In this way, the concentration of the gas to be measured can be determined by measuring the magnitude of the current.


* Low power consumption

* High precision

* High sensitivity                                      

* Wide linear range

* Strong anti-interference ability

* Excellent repeatability and stability

Share To:


Industrial Exhaust Monitoring

Industrial waste gas refers to the general term for various pollutant-containing gases discharged into the air generated during the fuel combustion and production process in the factory area of the enterprise. These gases enter the human body through the respiratory tract through different routes, some directly cause harm, and some have an accumulation effect, which will seriously endanger human health.


Coal Mining Industry Poison Gas Monitoring

Flammable gas is mainly detected by catalytic sensor, mainly measuring 100% LEL, and also using thermal conductivity components to measure 100% VOL. High-end gas detection products in the petrochemical industry are gradually using infrared gas sensors, which can measure 100% LEL and 100% VOL. At the same time, laser beam technology is also gradually being used in the petrochemical industry.


Didn't Find Your Tarket Application?
Winsen offers tailor-made gas sensor solutions for your industry

Contact us


Specification Product Size

Technical Data Sheet

Model No. ME3-AsH3
Types electrochemical
Capsulation plastic package(ME3
Max detecting range 0-3ppm
Max detecting concentration 20ppm
Anticipated using time 2 years
sensitivity 4±1.5 uA/ppm
resolution 0.01ppm
Temperature Range ﹣20℃~+50℃
Pressure range normal atmosphere ± 10%
Response time(T90) ≤30S
Humidity Range 15%~90%RH(no condensation)
Zero drift(-20℃~40℃) ≤0.07ppm
stability(/month) <2%
Load resistance(recommended) 10Ω
repeatability <2%output
Output linearity linear



Free Guide! Learn the Parameter Differences of Similar Sensors

Wondering how to find the most suitable one for you out of so many sensors? Download our free guide to learn the comparison table of technical parameters. 



As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


Professional and Trustworthy

Brand Precipitation

Focus on Sensor Field

115 +

National Patents

International Advanced Technology

300 +

Detection Objects

More Than 300 Kinds

Production Process

Excellence Products 

60 +

Provide 60+ Countries with Solutions

Serve the Global Market

300 +

Cooperate with 300+ well-known Enterprises

More Customer’s Choice

How to choose the right sensor for your project?

We have 17 sensor series, 200+ categories, and 300+ detection objects for gas detection. Such as CO, CO2, VOC, PM2.5, CH4, LPG and so on. In particular, we also have MEMS sensors. According to your industry application, gas principle, power consumption, accuracy, and range requirements, and we can select a specific model for you. You can also use the product filter below to choose a suitable product, or choose online serivce.

Still need help? Join the community


Here you can learn about the selection guide, common technical problems, packaging, transportation, MOQ, delivery time, etc.

Factory or Trade Company?

Winsen is a factory with over 30,000 square meters area and 500+ production machines which is focusing on sensors development&manufacturing. It has strong R&D strength with more than 100 R&D personnel.

How long is the delivery time?

1-7 days after received payment

What is your warranty term?

The warranty period is one year from the date of shipment. If the appearance of the product is not damaged, it can be returned after confirmation. For damage not caused by Winsen, the customer shall bear all maintenance costs.

Send your inquiry today

Security verification
Submit now!
Security verification

We will send the manual to your email.

Please leave your email address.